中国塑料

中国塑料 ›› 2010, Vol. 24 ›› Issue (07): 87-91 .DOI: 10.19491/j.issn.1001-9278.2010.07.019

• 助剂 • 上一篇    下一篇

膨胀型阻燃剂和有机蒙脱土协同阻燃聚丙烯的研究

李莹 王向东   

  1. 轻工业塑料加工应用研究所 北京工商大学材料科学与工程系
  • 收稿日期:2010-05-10 修回日期:1900-01-01 出版日期:2010-07-26 发布日期:2010-07-26

Study on Synergistic Retarding Effect of Intumescent Flame Retardant and Organic Montmorillonite on Polypropylene

LI Ying WANG Xiangdong   

  • Received:2010-05-10 Revised:1900-01-01 Online:2010-07-26 Published:2010-07-26
  • Contact: LI Ying

摘要： 采用熔融插层法制备了聚丙烯/膨胀型阻燃剂/有机蒙脱土（PP/IFR/OMMT）阻燃复合材料。探讨了OMMT对PP膨胀阻燃体系的影响，通过X射线衍射(XRD)、极限氧指数、热重分析(TG)、力学性能测试对阻燃复合材料的阻燃性、热稳定性及力学性能进行了研究。结果表明，PP高分子链插层进入OMMT层间，形成了插层型复合材料。OMMT与IFR具有明显的协同阻燃性。OMMT添加量为2份时，复合材料的极限氧指数达到31 %，较单独添加IFR时高出30 %；与纯PP相比，复合材料残炭率明显提高。随着OMMT含量的增加，复合材料的拉伸强度、弯曲强度和冲击强度均呈现先上升后下降的趋势，当OMMT含量为3份、IFR含量为22份时，复合材料的拉伸强度、弯曲强度和冲击强度达到最大值。

关键词: 聚丙烯, 有机蒙脱土, 膨胀型阻燃剂, 协同阻燃

Abstract: Polypropylene /intumescent flame retardant / organic montmorillonite (PP/IFR/OMMT) composites were prepared by direct melting intercalation. The synergistic flame retarding effect of OMMT and IFR was investigated. The composite was characterized by X-ray diffraction, limiting oxygen index, thermal analysis, etc. It was found that the layers of OMMT were intercalated by PP chain. There was a clear synergistic retarding effect between OMMT and IFR. When 2 phr of OMMT was introduced, the limiting oxygen index was 30 %, and the carbon residue increased obviously. With increasing contents of OMMT, the tensile strength, bending strength and impact strength of composites increased, and then decreased. When 3 phr of OMMT was introduced, the tensile strength, bending strength and impact strength of composites reached the maximum value.

Key words: polypropylene, organic montmorillonite, intumescent flame retardant, synergistic retarding

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